Cutting-die.



A. GEIGER.

CUTTING DIE. APPLICAIION FILED SEPT. l?. 1915.

1,185,898. PatetedJune,1916. 2 SHEETS-SHEET ll.

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CUTTING DIE.

` APPLICATION FILED SEPT. 17. 1915.

Patented June 6,1916.

2 SHETS-SHEET 2.

A .Z 41%.; i lil-ln 1| "a E 7 \I I Y L .gull llllllllvlllll I ADOLPH GEIGER, 0F ROCHESTER, NEW YORK.

cT'rING-DIE.

Application mea september 17, 1915'. seriai No. 51,185.

this class for forming top lifts for heels for articles of foot wear.

My present invention is an improvement upon the cutting dies described and claimed in Letters Patent No. 1,129,478, granted to me February 28rd, 1915, and the objects are to simplify the construction and reduce the number of parts and to so arrange the same that a high pressure can be applied and a dense lift produced. These and other -ob jects I accomplish as hereinafter set forth in the following description and'particularly pointed out in the appended claims, reference being had to the accompanying drawings in which adaptations or embodimentsA of my improved dies are shown.

- In the drawings Figure 1, represents a side elevation of my improved device. Fig. 2, is a central longitudinal section on line 2-2 Fig. 3. Fig. 3, is a detached top plan view of the cutting die. Fig. 4, is a transverse section through the cutting die. Fig. 5, is a detail-detached plan View of the guide block.l Fig. 6, is a central longitudinal section through a form of my improv-ed device employed for soft leather. Fig. 7, is a detail detached view of one of the rubber disks employed in the form shown in Fig. 5. Fig. 8,

Y is a detached top plan view of Vone form of cutting die.' Fig. 9, is a transversesection through the form of cutting die shown in Fig. 8, taken on line 9 in said Fig. 8. Fig. 10 is a detached bottom view of the holding die or member.

In referring to the embodiments of my invention shown in the laccompanying drawings in detail, like numerals indicate corre# sponding parts.

A tubular casing 1, is provided on the eX- terior of its upper lterminal with screwthreads 2, and on the interior of its lower terminal with screw threads 3. This casing constitutes a Vhandle which can be readily grasped by the operator and is preferably knurled or roughened upon its medial eX- terior surface to prevent slipping and provide a more secure grip.v ,i

A screw nut 4, is screwed upon the screw threaded upper terminal of the casing and is provided at the topv with an inwardly eX- tending annular flange 5, which projects over the top edge of the casing and inwardly sufliciently to form an annular shoulder eX- Vtending within the top mouth of the casing as shown in Fig. 2. This nut 4 is preferably knurled on its periphery as shown at 5a, in Fig. 1,' so that it may be easily turned by hand. i

A cutting die 5b of hollow formation and of substantially the' shape ofthe heel of a shoe is provided with thickened'portions 6,

Specification of Letters Patent. v Patentd June 6, 1916 having deep internally screw threaded recesses 7 as shown in Fig. 4. 1

A guide block or disk 8, is mounted upon the top of the. cutting die'being rigidly fastened thereto byv screws 9, which are fitted through counter-sunk openings in the block 8, and screw into the recesses 7. -The block or disk 8, has a tubular perpendicular eX'- ten'sion 10, which is eXteriorly screw threaded and screws into the lower end of the casing 1.

A two membered plunger slidably mounted within the casing and cutting die,

being composed of a lower member having a holding block 11, shaped to substantially lthe interior conformation of the cutting die and a stem 12, provided with a screw threaded recess in its upper end, and an iupper member having a head 13, and a screw threaded shank 14, which screws into the recess in the stem of the lower member.

The guide block or disk 8, is providedl I with an opening 15, through which the stem 12, fits and slides. y i l A The top of the extension is recessedV as shown' at 16, Asaid recess being considerably larger than and concentric with the-opening through the extension and 4being adapted to receive the head 13, when theV plunger is in its lowermost position.

The plunger is yieldingly maintained in its holding position Yby a heavy helical or coil spring k17, which is arranged within the casing with its upper extremity bearing against a top disk 18 which in turn lits against the flange 5y of the top nut 4, and its lower end pressing upon the head 13 of the plunger.

To center thehead 13 with respect tothe spring, I Vprefer to form a raised center portion 19 on the head which lits in the lower end of the spring.

The raised portion 19, may be provided with a slot 20 for the reception of a suitable turning tool such as a screw driver so that the members of the plunger may be readily taken apart. As shown in Fig. 2, l prefer to round the curved bottom edge of the plunger as otherwise owing tothe heavy pressure exerted by the spring, the lift would be apt to be' cut. Also I prefer to bevel the curved part 22, of the cutting die on the inside while the inner edge of the breast 23, is left straight.

To provide means for conveniently lubricating'the interior I form an oil groove 24, on the top edge ofthe cutting die.

ln the form of my invention'shown in Figs. 6 and 7, which is chiefly adapted for comparatively soft leather requiring lighter pressure, a series of annular disks of rubber or other suitable resilient material are substituted in place of the spring 17 ,Y

and are fitted between the top disk and the head of the plunger.V A series of metal washers 26, are interposed between and separate the disks and a metal bottom disk 27, is arranged below the lowermost rubber diskand has a flat top surface against which the lowermost rubber disk presses. As shown in Fig. 6, the bottom disk 27, seats in the recess 16, when in its lower position. j y

To avoid any possibility of the cutting die breaking out under heavy work especially at the corners between the curved cuttingedgeand the straight cutting edge forming the breast of the lift, I may round these corners and attach a separate cutting plate to the interior of the straight cutting edge. This form of my invention is shown Y in Figs. 8 and 9.

The separate cutting plate 28, is attached tothe inner surface of the breast of the die by countersunk screws 29, and has its lower l' quickly assembled and dismounted.

In operating the device the plunger forms a holding-,die which is driven back within theV cutting die against theV tension of the spring or rubber disks as the pressure becomes great enough, thereby permitting theV cutting'die to be forced down to cut the desired blank.

While I have illustrated and described Vterations, modiiications preferred forms of construction for carryin@ m invention into effect this is ca )able of a wide range of variation, alteration,

modification and change without departing from the spirit of my invention, I therefore do not wish to be limited to the construction herein shown and described, but desire to avail myself of all such variations, al-

and changes as fairly fall within the scope of the appended claims or may be construed to be within the scope thereof by involving the doctrine of equivalents.

Wha-t l claim as my invention and desire to secure by Letters Patent is l. A device of the class described, comprising a tubular casing, a guide block attached to the lower endof the casing and having an opening, a cutting die attached tothe guide block, a holding die yieldinffly mounted in the cutting die and having a stem projecting through the opening in the guide block and into the casing and a spring in the casing bearing against the stem of Athe holding die.

2. A device of the class described, comprising a tubular casing, a guide block attached to the lower end of the casing and having an opening, a cutting die attached to the guide block, a holding diel yieldingly mounted in the cutting die and having a stem projecting through the opening in the guide block and into the casing, an enlargement at the upper extremity of said stem and a spring inl the casing bearing against the enlargement of the stem.

3. A device of the class described, comprising a tubular casing, a guide block attached to the lower end of the casing, a cutting die attached to the undersurface of the guide block, a holding die yieldingly mounted in the cutting dieand having a stem projecting through an opening in the guide block into the casing, and resilient means within the casing against which the f stem contacts.

' 41A device of the class described, comprising a tubular casing, a guide block attachedto the lowerrend of the casing, a

cutting die attached to the guide block, a resilient element within the casing and a separable multi-memberedl plunger having the lower member yieldingly mounted in the cutting die andv constituting a holding die with its stem projecting through an opening l ian an enlarged head within the casing and tensioning means within the casing bearing against the enlarged head of the stem.

6. The combination with a casing, a guide block at one end of the casing and a cutting die attached to the guide block of a yielding holding die within the cutting die having a stem extending through the guide block and tensioning means within vthe casing bearing against said stem.

7. A device of the. class described, comprising a hollovs7 cutting die, a holding die yieldingly mounted within the cutting die,-

, a casing attached to the guide block opposite the cutting die and means located Within said casing for tensioning said holding die. 9. In a device of the class described, a

casing having an internally screw threaded lower end, a guide block having a tubular extension screwing in the lower end of the casing, a cutting die attached to the guide' block, a holding die movably mounted within the cutting die and having a stem projecting through the tubular extension of the guide block, and tensioning means in the casing bearing against said stem.

10. In a device of the class described, a casing having an internally screw threaded lower end, a guide block having a tubular extension screwing in the lower end of the casing, a cutting die attached to and extending below the guide block, a holding die movably mounted within the cutting die and having a stem projecting through the tubular extension of the guide block, a retaining nut on the upper terminal of the casing, and tensioning means in the casing bearing against said stem.

In testimony whereof I have this dkayV set my hand.

ADOLPH GEIGER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, ZD. G. 

